Finding the Fourth Proportional to 112,753.98, 155,532.15 and 74,513.88
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Solution
The fourth proportional to 112,753.98, 155,532.15 and 74,513.88 is: 102,783.99
Step by Step Solution
- Step 1: Write the proportion equation
112,753.98 : 155,532.15 = 74,513.88 : x - Step 2: Convert to fraction form
112,753.98/155,532.15 = 74,513.88/x - Step 3: Cross multiply
112,753.98x = 155,532.15 × 74,513.88 - Step 4: Simplify right side
112,753.98x = 11,589,303,961.24 - Step 5: Solve for x
x = 11,589,303,961.24/112,753.98 - Step 6: Final answer
x = 102,783.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.